Muffler



FIG. 1 is a side perspective view of a muffler in accordance with the present invention;

FIG. 2 is a bottom plan view of the invention according to FIG. 1; the top plan view being a mirror image thereof;

FIG. 3 is a left side elevation, the right side being a mirror image thereof; and,

FIG. 4 is a rear elevation, the front being a mirror image thereof. 

CLAIM The ornamental design for a muffler, as shown and described herein. 